JP2010263721A - Superconducting coil, superconducting apparatus, rotor and stator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a superconducting coil that suppresses the degradation of electric performance, and a superconducting apparatus using the superconducting coil. <P>SOLUTION: The superconducting coil includes a racetrack-type coil constituting, for example, a stator coil 21, and, for example, a stator core 23 arranged at the internal periphery side of the racetrack-type coil. The superconducting coil also includes a magnetic force line induction material 50 which opposes the linear part of the racetrack-type coil and the stator core 23 side, and has a length equal to or more than the length of the linear part of the stator core 23. Magnetic flux 59 progressing from the internal periphery side of the racetrack-type coil to the external periphery side passes through the magnetic force line induction material 50. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a superconducting coil body, a superconducting device, a rotor, and a stator.

  For example, in order to improve the driving capability of a motor, a superconducting coil may be used as a coil used for a rotor that is a rotor. This is because the superconducting coil can provide a high-strength magnetic field by increasing the current value that can be energized compared to a normal coil.

  However, the high-intensity magnetic field generated when a current is passed through the superconducting coil may deteriorate the electrical characteristics of the current. Specifically, for example, the critical current value of the superconducting coil may decrease due to the high-intensity magnetic field. And in the magnetic field, in particular, the direction crossing the width direction and the long axis direction of the superconducting coil, especially the direction along the thickness direction of the superconducting wire constituting the superconducting coil (more specifically, penetrating the main surface of the superconducting wire) The magnetic field applied to the superconducting coil deteriorates the current characteristics of the superconducting coil and causes a phenomenon such as quenching in the superconducting coil. Therefore, as a superconducting coil that suppresses deterioration of electrical characteristics due to a magnetic field, for example, the one disclosed in Patent Document 1 below can be considered.

  The superconducting coil in Patent Document 1 is a superconducting coil composed of a superconducting wire wound around a winding frame in a pancake shape, and a plurality of these are laminated. A magnetic field distribution adjusting member having magnetism is disposed between the plurality of superconducting coils stacked via an electric insulating member made of an electric insulating material. By adopting such a configuration, in Patent Document 1, it is possible to reduce the component penetrating the superconducting wire out of the magnetic flux due to the magnetic field of the direction component perpendicular to the main surface of the superconducting wire.

JP 2004-342972 A

  However, the technique disclosed in Patent Document 1 does not change the total strength itself of the magnetic flux penetrating the superconducting coil. The superconducting coil disclosed in Patent Document 1 is different in configuration from a so-called racetrack type superconducting coil used as a superconducting coil used for a rotor and a stator constituting a motor.

  Here, FIG. 12 is a cross-sectional view of a region where a rotor and a stator of a conventional superconducting motor are formed. In other words, FIG. 12 is a cross-sectional view taken along line XII-XII in FIG.

  In the motor main body 30 of the superconducting motor shown in FIG. 12, for example, the rotor 10 has a region composed of an iron core called a rotor core 13 and the stator 20 called a stator core 23. The rotor coil 11 and the stator coil 21 are arranged so as to wind these regions.

  In particular, the superconducting motor shown in FIG. 12 has a region where the magnetic field is strong in each of the rotor and the stator constituting the motor. Specifically, a region 1a and a region 1b surrounded by a dotted line in FIG. The region 1a is the outermost region in the side portion of the rotor core 13 around which the rotor coil 11 of the rotor existing in the center of FIG. 12 is wound. The region 1b is the innermost region in the side portion of the stator core 23 around which the stator coil 21 of the stator existing on the outer periphery of the rotor is wound. These regions tend to increase the strength of the magnetic field when the inventor studied using simulations and the like.

  When a strong magnetic field is generated in a superconducting device such as the superconducting motor as described above, a magnetic field distribution adjusting member arranged inside the superconducting coil with a magnetic flux penetrating the superconducting coil as in Patent Document 1 described above. However, it is difficult to sufficiently reduce the influence of the magnetic field on the superconducting coil, and deterioration of the superconducting coil characteristics due to the magnetic field is still a big problem.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a superconducting coil body capable of suppressing deterioration of electrical characteristics and a superconducting device using the superconducting coil body.

  The superconducting coil body according to the present invention is a superconducting coil body including a racetrack coil and a core disposed on the inner peripheral surface side of the racetrack coil. There is provided a magnetic flux line guiding member facing the straight portion of the racetrack coil and the side of the core and having a length equal to or longer than the length of the straight portion of the core.

  Here, the inner peripheral surface of the racetrack type coil means the innermost surface facing the core among the superconducting wires wound in a pancake shape, and the outer peripheral surface of the coil is the racetrack type coil. The outermost surface that is farthest from the core around which the wire is wound.

  As described above, the superconducting coil body according to the present invention is, specifically, the entire straight portion of the racetrack type coil and the side of the core so as to face the straight portion of the racetrack type coil and the side of the core ( Magnetic flux line induction having a length equal to or longer than the length of the straight portion of the core with respect to the extending direction of the straight portion of the core so as to face the whole of the core (the side face facing the inner peripheral surface of the racetrack coil). A member is provided. The magnetic flux (flux lines) generated by the magnetic field is one of the side end portions of the core in the entire linear portion of the racetrack coil (one in the insertion direction when the core is inserted into the inner peripheral surface of the racetrack coil). From the end portion) around the outer peripheral surface of the racetrack coil and in the direction toward the other side end portion of the core. However, the electromagnet generated when a current flows through the racetrack coil has an N pole and an S pole. For this reason, there is also a magnetic flux traveling in the opposite direction (that is, from the other side end of the core to one side end of the core) on the same line as the magnetic flux lines described above.

  Here, the linear portion of the racetrack coil and the side of the core are opposed to each other (more specifically, the linear portion of the racetrack coil is opposed to at least one of the side end portions of the core and the other). A magnetic flux line guiding member is disposed so as to face the end face (more preferably, the end face and the outer peripheral face connected to the end face). This magnetic flux line guiding member preferably extends in a direction along the direction from the inner peripheral surface of the racetrack coil to the outer peripheral surface.

  In this way, among the magnetic flux lines that circulate from the side edge of the core to the outer peripheral surface side of the racetrack type coil, the magnetic flux lines that pass through the racetrack type coil are adjacent to the racetrack type coil. And it can focus so that it may pass the magnetic flux line | wire induction member extended in the direction along the direction which goes to an outer peripheral surface from an internal peripheral surface. That is, the magnetic flux lines can be induced so as not to penetrate the racetrack coil. Therefore, it is possible to suppress the passage of magnetic flux lines so as to penetrate the racetrack type coil, and it is possible to suppress deterioration of superconducting characteristics in the racetrack type coil.

  In the superconducting coil body according to the present invention, the magnetic flux line guiding member is arranged in the direction in which the core is inserted on the outer peripheral surface side of the racetrack coil (for example, when a plurality of racetrack coils are stacked, the direction in which the cores are stacked). It is preferable to include a protrusion-like region extending in a direction along). Further, it is preferable that the protruding region is located outside the outer peripheral surface of the race track type coil as viewed from the core.

  Here, the direction in which the above-described core is inserted or the direction in which a plurality of racetrack coils are stacked is a direction that intersects the direction from the inner circumferential surface of the racetrack coil to the outer circumferential surface. In this way, for example, with respect to the magnetic flux lines that have passed through the magnetic flux line guiding member in the direction from the inner peripheral surface to the outer peripheral surface of the race track type coil, the magnetic flux lines have reached the outer peripheral surface side of the race track type coil. Thus, the traveling direction can be changed to a direction along the protruding region. Therefore, by adjusting the position of the projecting region, it is possible to arbitrarily set the position at which the magnetic flux lines change the direction in which the region extends. For example, if a region near the outer peripheral surface of the race track type coil, in particular, a protruding region is positioned so as to be located outside the outer peripheral surface, the magnetic flux lines that have reached the region are outside the outer peripheral surface of the race track type coil. You can be guided through. As a result, the magnetic flux lines can be prevented from entering the race track type coil.

  In the superconducting coil body according to the present invention, the magnetic flux line guiding member is formed from the center portion of the race track type coil from the inner peripheral surface and the outer peripheral surface in the direction from the inner peripheral surface to the outer peripheral surface of the race track type coil. It is preferable to extend so as to face a region up to the outer peripheral surface of the coil.

  Opposing to the region from the center part of the inner and outer peripheral surfaces of the racetrack type coil to the outer peripheral surface of the racetrack type coil means that the magnetic flux line guiding member in the region is from the inner peripheral surface to the outer peripheral surface of the racetrack type coil. It means to extend in a direction along the direction toward. It is preferable that the magnetic flux line guiding member extends in a direction from the inner peripheral surface toward the outer peripheral surface by a length equal to or more than half the distance from the inner peripheral surface to the outer peripheral surface of the racetrack coil. By arranging the magnetic flux line guiding member so as to extend in the direction from the inner circumferential surface of the race track type coil to the outer circumferential surface by at least the length, the outer circumferential surface side end of the magnetic flux line guiding member is a race track type. It reaches the vicinity of the outer peripheral surface of the coil without fail. For this reason, it is possible to more reliably guide the magnetic flux lines that attempt to penetrate the racetrack type coil to a region that does not pass the racetrack type coil (region outside the outer peripheral surface) via the magnetic flux line guiding member.

  In the superconducting coil body according to the present invention, the magnetic flux line guiding member is preferably made of a steel plate. In this way, since the magnetic flux line guiding member is formed using a steel plate that is a relatively easily available and inexpensive material, it is possible to suppress an increase in the manufacturing cost of the superconducting coil body according to the present invention.

  In a superconducting device such as a motor using the superconducting coil body according to the present invention described above, deterioration of the superconducting characteristics of the superconducting coil is suppressed. Therefore, it is possible to provide a superconducting device such as a motor that has higher electrical characteristics and can provide a high driving force by applying a high magnetic field.

  The rotor according to the present invention is a rotor using a superconducting coil body including a racetrack type coil and a core disposed on the inner peripheral surface side of the racetrack type coil. The superconducting coil body includes a magnetic flux line induction member that is opposed to the linear portion of the racetrack coil and the side of the core and has a length that is equal to or longer than the length of the linear portion of the core.

  A rotor constituting a superconducting device using a superconducting coil body according to the present invention described above, for example, a motor (superconducting motor) is an outermost region (outer periphery), particularly in a side portion of a rotor core around which a racetrack coil is wound. Side) magnetic field becomes stronger. For this reason, the racetrack type coil arranged in the vicinity of the region where such a strong magnetic field is generated is directed in the direction from the inner peripheral surface to the outer peripheral surface (the direction along the thickness direction of the superconducting wire of the racetrack type coil). Magnetic flux may penetrate. Alternatively, the magnetic flux may penetrate through the racetrack type coil in the reverse direction, that is, in the direction from the outer peripheral surface toward the inner peripheral surface. In any case, if the magnetic flux penetrates in this way, the electrical characteristics of the racetrack coil may be deteriorated.

  Therefore, the magnetic flux line guiding member is arranged as described above with respect to the racetrack type coil of the rotor. If it does in this way, the magnetic flux which is going to penetrate a race track type coil in the direction along the thickness direction can be guided so that it may pass through an adjacent magnetic flux line induction member. If it does in this way, it can control that magnetic flux penetrates a race track type coil. Therefore, deterioration of the superconducting characteristics of the racetrack type coil can be suppressed. The magnetic flux line guiding member used in the rotor preferably extends in a direction along the direction from the inner peripheral surface of the racetrack coil to the outer peripheral surface on the outer peripheral side of the rotor core having a strong magnetic field.

  The magnetic flux line guide member used for the rotor described above also preferably includes a protruding region extending in the direction along the direction in which the core is inserted on the outer peripheral surface side of the racetrack coil. The magnetic flux line guiding member extends from the central portion of the racetrack coil to the outer periphery of the racetrack coil in the direction from the inner periphery to the outer periphery of the racetrack coil. It is preferable to extend so as to face the region. In this way, the magnetic flux lines that are about to penetrate the racetrack type coil can be more reliably guided to the region that does not pass through the racetrack type coil via the magnetic flux line guide member. Furthermore, the magnetic flux line guiding member of the rotor is preferably made of a steel plate.

  The stator according to the present invention is a stator using a superconducting coil body including a racetrack type coil and a core disposed on the inner peripheral surface side of the racetrack type coil. The superconducting coil body includes a magnetic flux line induction member that is opposed to the linear portion of the racetrack coil and the side of the core and has a length that is equal to or longer than the length of the linear portion of the core.

  A stator constituting a superconducting device using a superconducting coil body according to the present invention described above, for example, a motor (superconducting motor), is an innermost region (center) particularly in a side portion of a stator core around which a racetrack coil is wound. Side) magnetic field becomes stronger.

  For this reason, as with the rotor, the magnetic flux line guiding member is disposed in the vicinity of the region where the magnetic field becomes strong. If it does in this way, it can control that magnetic flux penetrates a race track type coil. Therefore, deterioration of the superconducting characteristics of the racetrack type coil can be suppressed. The magnetic flux line guiding member used in this stator preferably extends in a direction along the direction from the inner peripheral surface of the racetrack coil to the outer peripheral surface on the center side of the stator core having a strong magnetic field.

  The magnetic flux line guiding member used for the stator described above also preferably includes a protruding region extending in a direction along the direction in which the core is inserted on the outer peripheral surface side of the racetrack coil. The magnetic flux line guiding member extends from the central portion of the racetrack coil to the outer periphery of the racetrack coil in the direction from the inner periphery to the outer periphery of the racetrack coil. It is preferable to extend so as to face the region. In this way, the magnetic flux lines that are about to penetrate the racetrack type coil can be more reliably guided to the region that does not pass through the racetrack type coil via the magnetic flux line guide member. Further, the magnetic flux line guiding member of the stator is preferably made of a steel plate.

  ADVANTAGE OF THE INVENTION According to this invention, the superconducting coil body which can suppress deterioration of an electrical property can be provided. Also, it is possible to provide a superconducting device (motor) capable of generating a high-intensity magnetic field with a high current and supplying a high driving force, and a rotor and a stator constituting the motor using the superconducting coil body. it can.

It is a schematic block diagram of the motor which concerns on Embodiment 1 of this invention. It is a schematic sectional drawing in line segment II-II of FIG. 1 which shows the aspect of the cross section of the motor which concerns on Embodiment 1 of this invention. FIG. 3 is an enlarged view of the inside of one status lot in FIG. 2. FIG. 3 is an enlarged view of the inside of one rotor slot in FIG. 2. FIG. 4 is an enlarged view for showing a dimensional relationship between a magnetic flux line guiding member and a racetrack type coil in FIG. 3. It is an enlarged view of the same area | region as FIG. 5 of the motor which concerns on Embodiment 2 of this invention. It is an enlarged view of the same area | region as FIG. 5 of the motor which concerns on Embodiment 3 of this invention. It is an enlarged view of the same area | region as FIG. 5 of the motor which concerns on Embodiment 4 of this invention. It is an enlarged view of the same area | region as FIG. 5 of the motor which concerns on Embodiment 5 of this invention. It is an enlarged view of the same area | region as FIG. 5 of the motor which concerns on Embodiment 6 of this invention. It is an enlarged view of the same area | region as FIG. 5 of the motor which concerns on Embodiment 7 of this invention. It is sectional drawing in the segment XII-XII of FIG. 1 regarding the conventional superconducting motor.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each embodiment, elements having the same function are denoted by the same reference numerals, and the description thereof will not be repeated unless particularly necessary.

(Embodiment 1)
Referring to FIGS. 1 and 2, a motor 100 according to Embodiment 1 of the present invention includes a motor body 30 including a rotor 10 that is a rotor and a stator 20 that is disposed around the rotor 10, and And an output shaft 18 connected to a load that outputs the rotation of the rotor 10. Since the output shaft 18 rotates, the output shaft 18 is rotatably fixed to the stator 20 by a bearing 35.

  The rotor 10 includes a rotor shaft 16 formed around an outer peripheral surface extending in the long axis direction of the output shaft 18. Further, the rotor 10 projects radially from the outer peripheral surface (outer peripheral portion) of the rotor shaft 16 from the central portion (region where the output shaft 18 is disposed) in the cross section intersecting the output shaft 18 of the rotor shaft 16. And a rotor coil 11 wound around the rotor core 13. The stator 20 is disposed so as to surround the rotor 10 in a cross section intersecting the output shaft 18 of the rotor shaft 16, and includes a stator coil 21 that generates a magnetic field, and a main body of the stator 20 including the stator coil 21. And a stator core 23 formed.

  As shown in FIG. 1, each rotor coil 11 in the rotor 10 is wound (turned) a plurality of times so as to form a racetrack shape so as to cover the longitudinal side surface of each rotor core 13 formed of, for example, iron. This is a superconducting coil in which a plurality of racetrack coils are laminated. The race track type coil constituting each rotor coil 11 forms a race track type coil by pancake winding a superconducting wire. Similarly, each stator coil 21 in the stator 20 covers a region where a stator core 23 made of, for example, iron protrudes in the direction in which the rotor 10 is arranged (that is, on the central side of the motor main body 30) as shown in FIG. Thus, a superconducting coil in which a plurality of racetrack coils wound in a plurality of turns are laminated. The race track type coil constituting each stator coil 21 is configured as a race track type coil by pancake winding a superconducting wire. In FIG. 1, the stator core 23, the stator coil 21, the coil cooling container 17, and the like shown in FIG.

  As shown in FIGS. 1 and 2, the rotor coil 11 and the stator coil 21 in the motor 100 have a configuration in which three layers of racetrack coils are laminated. The plurality of racetrack coils constituting the rotor coil 11 and the stator coil 21 are superconducting coils formed of a superconducting wire. With the above arrangement, it is possible to generate a magnetic field that is a source for generating the driving force of the motor 100 by passing a current through the racetrack coil.

  The superconducting wire used for each racetrack type coil constituting the rotor coil 11 and the stator coil 21 described above may be a thin film superconducting wire having a laminated structure including a superconducting layer, or powder as a superconductor may be used as a tube. It may be a superconducting wire formed by filling a wire and performing wire drawing, sintering, or the like. Moreover, as a material of the superconductor used for the superconducting wire, it is preferable to use an oxide superconducting wire made of an oxide such as Bi (bismuth) or Y (yttrium). Since the oxide superconducting wire can exhibit a function as a superconductor at a higher temperature than the metal superconducting wire, the use of the oxide superconducting wire can simplify the facility for cooling the coil, for example.

  In order to cool the racetrack type coil composed of the superconducting wire, as shown in FIG. 2, the coil cooling vessel 17 is provided around the racetrack type coil around the rotor slot 12 and the status lot 22. Is placed. If it says from a different viewpoint, the rotor coil 11 or the stator coil 21 will be arrange | positioned inside the coil cooling container 17 which fills the inside of the rotor slot 12 and the status lot 22. FIG.

  As shown in FIG. 1, a magnetic flux line guiding member 60 is disposed around each rotor coil 11. More specifically, as shown in the cross-sectional view of FIG. 2, the magnetic flux line guiding member 60 is a member disposed around the region where the rotor coil 11 is disposed inside the rotor slot 12. As shown in the cross-sectional view of FIG. 2, the magnetic flux line guiding member 50 having the same aspect as the magnetic flux line guiding member 60 disposed around the rotor coil 11 is disposed in the stator coil 21 inside the status lot 22. Around the area.

  As shown in FIG. 1, the magnetic flux line guiding member 60 is preferably disposed so as to face the straight portion of the racetrack coil (the straight portion extending in the left-right direction of the rotor coil 11 in FIG. 1). Further, the length of the magnetic flux line guiding member 60 (the length in the direction along the straight portion of the race track type coil) is longer than the length of the straight portion of the race track type coil or along the straight portion. It is preferable that the length is longer than the length of the rotor core 13 in that direction. That is, the magnetic flux line guiding member 60 is preferably arranged so as to face the entire straight portion of the racetrack coil. In FIG. 1, the magnetic flux line guiding member 60 is schematically illustrated as a rectangular frame in order to show its arrangement. However, as can be seen from FIG. 2, the magnetic flux line guiding member 60 has a T-shaped cross section (see FIG. 2) so as to partially overlap the outer peripheral side of the linear portion of the rotor coil 11. Further, for example, as shown in the enlarged views of the status lot 22 and the rotor slot 12 in FIGS. 2, 3, and 4, the magnetic flux line guiding members 50 and 60 are respectively formed on the stator core 23 like the member sides 51 and 61. It is preferable to extend to a position facing the side (stator core side portion 24) and the side of the rotor core 13 (rotor core side portion 14). Here, the side is a side surface of the rotor core 13 and the stator core 23 facing the inner peripheral surface of the racetrack coil.

  Moreover, it is preferable that the said magnetic flux-line induction | guidance | derivation members 50 and 60 have the length more than the length of the linear part of the rotor core 13 and the stator core 23 which oppose each, respectively. From the above, it is preferable that the magnetic flux line guiding members 50 and 60 face the entire linear portion on the side of the rotor core 13 and the stator core 23. Further, the straight portions of the racetrack coils constituting the rotor coil 11 and the stator coil 21 face the entire straight portions on the sides of the opposing rotor core 13 and stator core 23. Therefore, it is preferable that the magnetic flux line guiding members 50 and 60 face the entire straight portion of each racetrack type coil of the rotor coil 11 and the stator coil 21, respectively.

  As shown in FIGS. 2, 3, and 4, the magnetic flux line guiding members 50 and 60 include a region extending in a direction along the direction from the inner peripheral surface to the outer peripheral surface of each racetrack coil. preferable. More specifically, the region (members 51, 61 facing the rotor core 13 and the stator core 23) of the pair of end portions shown in FIG. 3 and FIG. It is preferable that a region extending along the outer peripheral side surface of 10 or a region extending along an end surface connecting the inner peripheral surface and the outer peripheral surface of the racetrack coil is provided.

  For example, each racetrack type coil that forms the rotor coil 11 wound around the rotor core 13 generates a magnetic field around it when a current flows. This is generally a direction along the width direction of the superconducting wire constituting the racetrack coil. That is, for example, the direction along the vertical direction of the stator coil 21 shown in FIG. However, for example, when the racetrack coil (stator coil 21) is laminated in two layers as shown in FIG. 3, the magnetic flux is curved at the uppermost part and the lowermost part of FIG. That is, like the magnetic flux 59 of FIG. 3, the magnetic flux which progresses in the direction (from the left side in FIG. 3 to the right side) along the thickness direction of the superconducting wire constituting the racetrack coil is generated. This is because the magnetic flux is bent by the presence of the stator core 23 around which the racetrack coil is wound.

  This will be examined in more detail with reference to FIG. A magnetic field is applied to the individual racetrack coils constituting the stator coil 21 in the direction from the inner circumferential surface to the outer circumferential surface of the racetrack coil, that is, in the direction toward the starting point side of the magnetic flux 59 (the traveling direction before bending). (The magnetic field passes). The stator coil 21 is arranged so as to wind around the stator core 23 and has a cross-sectional shape shown in FIG. The direction along the direction in which the superconducting wires wound a plurality of times in the racetrack coil are stacked is the thickness direction of the superconducting wire, which is the left-right direction in FIG. Since the direction on the starting point side of the magnetic flux 59 is the left-right direction in FIG. 3, the magnetic flux 59 traveling in the direction along the thickness direction of the superconducting wire constituting the racetrack coil (from the left side to the right side in FIG. 3) is generated. . As a result, the electrical characteristics of the stator coil 21 such as a critical current value and a problem such as quenching are deteriorated with respect to the current flowing through the racetrack coil (superconducting wire).

  However, the magnetic flux line guiding member 50 has a role of focusing the magnetic flux lines existing around the magnetic flux line guiding member 50 and controlling the direction in which the magnetic flux lines existing around are applied. Have. Therefore, as indicated by the magnetic flux 59 in FIG. 3, for example, a magnetic flux that attempts to pass through one race track type coil constituting the stator coil 21 from the inner peripheral surface side to the outer peripheral surface side so as to penetrate the race track type coil. The magnetic flux line guide member 50 adjacent to the racetrack coil is attracted. For this reason, the magnetic flux 59 does not pass through the racetrack type coil in the thickness direction but passes through the magnetic flux line guiding member 50. Therefore, the magnetic flux line guiding member 50 has a role of suppressing the magnetic flux 59 from passing through the racetrack coil, particularly in the direction along the thickness direction of the superconducting wire. For this reason, it is possible to suppress the deterioration of the electrical characteristics of the current flowing through the racetrack coil.

  As described above, in order to focus the magnetic flux lines that attempt to pass through one race track type coil from the inner peripheral surface side to the outer peripheral surface side so as to penetrate the race track type coil, the magnetic flux line guide member 50 includes: It is preferable to extend in the direction along the direction from the inner peripheral surface side to the outer peripheral surface side of the race track type coil (the direction along the thickness direction of the race track type coil). In this way, as shown by the magnetic flux 59 in FIG. 3, it is possible to easily induce the magnetic flux that attempts to penetrate the racetrack coil to pass through the magnetic flux line guiding member 50. In the stator, it is preferable that the magnetic flux line guide member 50 has a flange portion extending in the rotation direction of the rotor. Moreover, it is preferable that the edge part of the said flange part extends to the position adjacent to the one edge part (inner peripheral side edge part) of the side of a stator core. From another point of view, the flange portion may extend so as to straddle the end surface of the adjacent stator coil in the stator. Moreover, in the area | region between adjacent stator coils, the magnetic flux line induction member 50 may contain the protrusion-like area | region 52 extended in the direction along the outer peripheral surface which the adjacent stator coil opposes from the flange part surface.

  In FIG. 3, the magnetic flux 59 travels in the direction from the inner peripheral surface side to the outer peripheral surface side of the racetrack type coil, then bends at the branch point 53 and passes through the protruding region 52. However, there may also be a magnetic flux that passes through the protruding region 52 in the opposite direction and then bends at the branch point 53 and travels from the outer peripheral surface side to the inner peripheral surface side of the racetrack coil.

  The same applies to the magnetic flux line guiding member 60 in the rotor coil 11. That is, as shown in FIG. 4, the region connecting the pair of end portions (member side 61) of the magnetic flux line guiding members is a direction along the thickness direction of each race track type coil constituting the rotor coil 11 (inner It extends in the direction from the circumferential surface to the outer circumferential surface. This region causes a magnetic flux line to be transmitted in the direction toward the starting point of the magnetic flux 69 (the direction of travel before bending) of the magnetic flux 69 that attempts to penetrate the racetrack coil from the inner circumferential surface to the outer circumferential surface of each racetrack coil. The guide member 60 can be guided to pass. Therefore, the magnetic flux line guiding member 60 has a role of suppressing the magnetic flux 69 from passing through the racetrack coil, particularly in the direction along the thickness direction of the superconducting wire. For this reason, deterioration of the superconducting characteristics of the racetrack coil can be suppressed.

  Further, in the rotor, it is preferable that the magnetic flux line guiding member 60 has a flange portion extending in the rotation direction of the rotor. Moreover, it is preferable that the edge part of the said flange part extends to the position adjacent to the one edge part (outer peripheral side edge part) of the side of a rotor core. From another point of view, the flange portion may extend so as to straddle the end surface of the adjacent rotor coil in the rotor. Moreover, in the area | region between adjacent rotor coils, the magnetic flux line induction member 60 may contain the protrusion-like area | region 62 extended in the direction along the outer peripheral surface which the adjacent rotor coil opposes from the flange part surface.

  In FIG. 4, the magnetic flux 69 travels in the direction from the inner peripheral surface side to the outer peripheral surface side of the racetrack type coil, then bends at the branch point 63 and passes through the protruding region 62. However, there may also be a magnetic flux that passes through the protruding region 62 in the opposite direction and then bends at the branch point 63 and travels from the outer peripheral surface side to the inner peripheral surface side of the racetrack coil.

  The above magnetic fluxes 59 and 69 are generated in the entire straight portion of the racetrack coil (the straight portion extending in the left-right direction of the rotor coil 11 in FIG. 1). For this reason, as described above, it is preferable to arrange the magnetic flux line guiding members 50 and 60 in the entire straight portion of the racetrack coil (see FIG. 1). Further, the magnetic fluxes 59 and 69 are generated around the entire racetrack type coil by passing a current through the racetrack type coil. Therefore, the magnetic flux line guiding members 50 and 60 may be arranged on the side of the core, that is, the entire position where the core faces the side surface facing the inner peripheral surface of the racetrack coil. In this way, it is possible to control the magnetic flux traveling in the direction giving the possibility of affecting the superconducting characteristics in the racetrack coil at a high rate.

  As described above, the strong magnetic field regions generated by the rotor coil 11 and the stator coil 21 are, for example, the high magnetic field regions 1a and 1b indicated by the dotted line in the cross-sectional view of FIG. The high magnetic field region 1a is the outermost region (outer peripheral side) in the side portion of the rotor core 13 around which the rotor coil 11 of the rotor 10 existing in the center of FIG. 2 is wound. Further, the high magnetic field region 1 b is the innermost region (center side) in the side portion of the stator core 23 around which the stator coil 21 of the stator 20 existing on the outer peripheral portion of the rotor 10 is wound. That is, particularly in the center side, a large magnetic field is generated by the current (superconductivity) flowing through the racetrack coil. For this reason, the magnetic flux which progresses in the direction along the thickness direction of the superconducting wire which comprises the racetrack type coil arrange | positioned at the center side tends to become especially large. Therefore, as shown in FIG. 2 and FIG. 3, the region connecting the pair of end portions (member side 51) of the magnetic flux line guiding member 50 may be disposed on the inner side (center side) of the stator coil 21. preferable. Similarly, in the rotor coil 11, the magnetic flux traveling in the direction along the thickness direction of the superconducting wire constituting the racetrack coil disposed on the outer peripheral side tends to be particularly large. Therefore, as shown in FIGS. 2 and 4, the region connecting the pair of end portions (member side 61) of the magnetic flux line guiding member 60 may be disposed outside (outer peripheral side) of the rotor coil 11. preferable.

  If it does in this way, the area | region along the direction which goes to the outer peripheral surface from the inner peripheral surface of a race track type | mold coil among the said magnetic flux line induction members 50 and 60 will be arrange | positioned in the area | region close to the high magnetic field area | region 1a, 1b. become. Therefore, in this region, it is possible to focus the magnetic flux that attempts to penetrate the racetrack coil with higher efficiency. Therefore, it is possible to more reliably prevent the magnetic flux from passing through the racetrack coil, particularly in the direction along the thickness direction of the superconducting wire.

  That is, in the stator shown in FIG. 3 in particular, a region having a strong magnetic field is formed at the inner peripheral side end (lower end in FIG. 3) which is one end of the side surface of the stator core. The end portion of the magnetic flux line guiding member 50 extends (the end portion of the magnetic flux line guiding member 50 extends to a position adjacent to one end portion of the side surface of the stator core), so that the magnetic flux lines can be more reliably routed. It can be focused on the guide member 50. In particular, in the rotor shown in FIG. 4, a region having a strong magnetic field is formed at the outer peripheral side end (upper end in FIG. 4), which is one end of the side surface of the rotor core. The end of the wire guiding member 60 extends (the end of the magnetic flux guiding member 60 extends to a position adjacent to one end of the side surface of the rotor core), so that the magnetic flux lines can be guided more reliably. It can be focused on the member 60.

  Further, as described above, the magnetic flux line guiding members 50 and 60 described above include a plurality of racetrack type coils constituting the rotor coil 11 and the stator coil 21 as shown in FIGS. (3 layers) including the above-described protruding regions 52 and 62 extending in a direction along the direction of lamination (a direction in which the rotor core 13 or the stator core 23 is inserted on the inner peripheral surface side of the racetrack coil). preferable. More specifically, for example, as shown in FIG. 3, the magnetic flux line guiding member 50 of the status lot 22 intersects with a region connecting the member side portions 51 of the magnetic flux line guiding member 50 in the cross section shown in FIG. A protruding region 52 that is a region extending in the vertical direction in FIG. 3 is provided. This is a region extending from the branch point 53 in the vertical direction in FIG. The up-down direction in FIG. 3 in which the protruding region 52 extends is a direction along the direction in which the racetrack coils constituting the stator coil 21 are laminated. Similarly, the magnetic flux line guiding member 60 of the rotor slot 12 of FIG. 4 is a protruding shape that is an area that intersects the area 61 connecting the side parts 61 of the magnetic flux line guiding member 60 (extends in the vertical direction in FIG. 4). A region 62 is provided. This is a region extending from the branch point 63 in the vertical direction in FIG.

  For example, in the protruding region 52 (region near the branching point 53), the thickness in the thickness direction (vertical direction in FIG. 3) of the region extending in the left-right direction connecting the member side portions 51 of the magnetic flux line guiding member 50 is different. It is larger than the area. The region where the thickness is increased in this way is defined as the protruding region 52. The same applies to the protruding region 62 of the magnetic flux line guiding member 60.

  With such a configuration, the following effects can be achieved. Here, for example, as shown in FIG. 3, a magnetic flux traveling in a direction along the direction from the inner peripheral surface of the racetrack coil to the outer peripheral surface is guided to the magnetic flux line guiding member 50, and one of the magnetic flux line guiding members 50 is Consider a case in which the magnetic flux line guiding member 50 is advanced from the member side 51.

  If the magnetic flux line guiding member 50 is not provided with the protruding region 52 and is composed only of a region connecting the pair of member side portions 51, for example, the end point at which the magnetic flux line guiding member 50 extends is shown in FIG. In the case of the vicinity of the outer peripheral surface of one of the racetrack coils, the magnetic flux 59 leaks to the outside of the magnetic flux line guiding member from the end point. Then, there is a possibility that the magnetic flux 59 may enter the inside of the other race track type coil from the outer peripheral surface of another race track type coil adjacent to (facing) the race track type coil in which the magnetic flux line guiding member 50 is disposed. There is. The magnetic flux 59 that has entered the other race track type coil in this way proceeds in a direction along the thickness direction of the race track type coil in a direction from the outer peripheral surface of the adjacent race track type coil to the inner peripheral surface. It may have a component to do. Eventually, the magnetic flux 59 may affect the electrical characteristics of the stator coil made up of the other racetrack coil.

  Therefore, like the magnetic flux line guiding member 50 shown in FIG. 3, a protruding region 52 that intersects with a region extending from the branch point 53 in the direction connecting the member side portions 51 is provided. In this way, the magnetic flux 59 that enters from the member side 51 on the inner peripheral surface side of the left racetrack coil in FIG. 3 and passes through the magnetic flux line guide member 50 is separated from the member side 51 at the branch point 53. The direction of travel is changed from the direction connecting the two to the direction intersecting this, and proceeds in the vertical direction in FIG.

  Therefore, it is possible to reduce the possibility that the magnetic flux 59 travels in a direction along the inner peripheral surface from the outer peripheral surface of the right racetrack coil in FIG. For this reason, the presence of the projecting region 52 can more reliably suppress the deterioration of the superconducting characteristics of the racetrack coil.

  The magnetic flux line guiding member 60 in the rotor slot 12 shown in FIG. 4 has the same effect as the magnetic flux line guiding member 50 described above. That is, the magnetic flux 59 that enters from the member side 61 on the inner peripheral surface side of the left racetrack type coil in FIG. 4 and passes through the magnetic flux line guiding member 60 turns in the traveling direction at the branch point 63 to project the projecting region 62. Proceed through.

In the magnetic flux line guiding members 50 and 60 described above, the length of the region facing the racetrack coil among the regions extending in the direction from the inner circumferential surface to the outer circumferential surface of the racetrack coil. It is preferable that the ratio is large. Specifically, in the magnetic flux line guiding member 50 of the stator coil 21 shown in FIG. 5, the length l ₁ of the portion facing the race track type coil in the region extending in the left-right direction in FIG. from the inner circumferential surface of the coil to the outer surface, it is preferable to have more than half of the length l ₂ along the thickness direction of the superconducting wire. That is, as shown in FIG. 5, the length l ₁ is preferably equal to or longer than the length from the central portion 54 to the outer peripheral surface of the inner and outer peripheral surfaces of the racetrack coil. That is, it is preferable that the region (the left-right direction in FIG. 5) connecting the member side portions 51 of the magnetic flux line guiding member 50 is opposed to the entire region from the central portion 54 to the outer peripheral surface.

In this way, the magnetic flux 59 traveling so as to penetrate the racetrack type coil can be focused toward the magnetic flux line guide member 50 in a wide region facing the racetrack type coil of the magnetic flux line guide member 50. . Therefore, the longer the length l _{1, the} greater the effect that the magnetic flux line guiding member 50 focuses the magnetic flux 59 toward the magnetic flux line guiding member 50. As a result, it is possible to more reliably suppress the deterioration of the superconducting characteristics of the racetrack type coil.

  Further, the thickness (height) h of the protruding region 52 shown in FIG. 5 is preferably opposed to a wide region on the outer peripheral surface of the racetrack coil. In particular, it is preferable to have a thickness h sufficient to face the entire outer peripheral surface on which the racetrack coil is laminated. However, in particular, as shown in FIG. 5, three layers of racetrack type coils constituting the stator coil 21 and the rotor coil 11 are laminated, and the dimension in the width direction of one layer of the racetrack type coil (the vertical direction in FIG. 5). ) Is 20 mm, the thickness h is preferably 4 mm or more. In this way, the magnetic flux 59 turned in the extending direction of the projecting region 52 passes over the magnetic flux line guiding member 50 in the extending direction of the projecting region 52, so that the magnetic flux 59 is a racetrack type. It is possible to suppress deterioration of the electrical characteristics of the racetrack coil due to leakage in the direction in which the coil is arranged.

Note that FIG. 5 shows the stator coil 21 and the magnetic flux line guiding member 50 arranged inside the status lot 22. However, although not shown, the magnetic flux line guiding member 60 disposed inside the rotor slot 12 preferably has the same length l ₁ and thickness h as the magnetic flux line guiding member 50. For example, as shown in FIG. 4, the magnetic flux line guiding member 60 inside the rotor slot 12 also has a member side closer to the inner peripheral surface than the central portion between the inner peripheral surface and the outer peripheral surface of the racetrack coil (rotor coil 11). Way 61 exists. That is, the magnetic flux line guiding member 60 in FIG. 4 extends so as to face a region from the central portion between the inner peripheral surface and the outer peripheral surface of the race track type coil to the outer peripheral surface of the race track type coil.

  In the following, only the magnetic flux line guiding member 50 of the status lot 22 is shown and described based on this. However, all of the magnetic flux line guiding members 60 of the rotor slot 12 can have the same configuration as that of the magnetic flux line guiding member 50, and in that case, the same effect is obtained.

  In order to enhance the function of the magnetic flux line guiding member 50 as described above to control the magnetic flux passing through the racetrack coil, it is preferable to use, for example, a steel plate as a material constituting the magnetic flux line guiding member 50. The magnetic flux line guiding member 50 is preferably made of a steel plate such as a silicon steel plate or a nickel iron alloy such as permalloy or supermalloy.

  As described above, in the motor 100 according to the first embodiment, the superconducting characteristics in the stator coil 21 and the rotor coil 11 are improved. Moreover, although the direction etc. are controlled in the magnetic flux line induction member 50 also about the magnetic flux, the intensity | strength as the whole does not fall. Therefore, in motor 100 serving as a superconducting device in the first embodiment, a superconducting coil body including a racetrack coil (stator coil 21 and rotor coil 11), a core (stator core 23 and rotor core 13), and magnetic flux line induction member 50. As a result, a high critical current value and a strong magnetic field can be provided.

  In the motor 100 according to the first embodiment of the present invention, the rotor coil 11 and the stator coil 21 do not have to be laminated with a plurality of racetrack coils. That is, the rotor coil 11 and the stator coil 21 may each be constituted by a single racetrack type coil.

  In the motor 100 described above, the magnetic flux line guiding members 50 and 60 are arranged with respect to both the rotor 10 and the stator 20. However, depending on the situation, for example, the above-described magnetic flux line guiding member is arranged only for one of the rotor 10 and the stator 20, and the other racetrack type coil is the same as the racetrack type coil shown in FIG. It is good.

(Embodiment 2)
The motor 100 according to the second embodiment has basically the same aspect as the motor 100 according to the first embodiment. However, the motor 100 according to the second embodiment is different from the motor 100 according to the first embodiment in the arrangement of the magnetic flux line guiding members 50.

  Specifically, as shown in FIG. 6, two magnetic flux line guiding members 50 are arranged inside one status lot 22. That is, the left magnetic flux line guiding member 50 for converging the magnetic flux extending from the left stator coil 21 in FIG. 6 and the right magnetic flux line guiding member 50 for converging the magnetic flux extending from the right stator coil 21 in FIG. Are arranged in the status lot 22. One end of a region extending in the left-right direction in FIG. 6 of these magnetic flux line guiding members 50 is a member side 51 similar to the magnetic flux line guiding member 50 of the motor 100 in the first embodiment in FIG. It is. However, with respect to the other end portion, an opposing end portion 55 exists with a length shorter than the length from the branch point 53 to the member side 51 being separated from the branch point 53.

  In the motor 100 according to the second embodiment, the magnetic flux line guiding member 50 shown in FIG. 6 is used as the magnetic flux line guiding member 50 in the motor 100 instead of the magnetic flux line guiding member 50 shown in FIG. That is, the magnetic flux line guiding member 50 having the same configuration as the magnetic flux line guiding member 50 disposed in the status lot 22 described above is disposed in the rotor slot 12. Also in this case, similarly to the magnetic flux line guiding member 50 in FIG. 5, the magnetic flux traveling in the direction along the direction from the inner circumferential surface to the outer circumferential surface of one of the racetrack coils extends in the left-right direction in FIG. Can be focused by the magnetic flux line guiding member 50 that passes through the protruding region 52 via the branch point 53.

  Further, in the magnetic flux line guiding member 50 in FIG. 6, the magnetic flux that has passed through the magnetic flux line guiding member 50 from the member side 51 to the branching point 53 does not turn at the branching point 53 and goes straight, and the magnetic flux line induction from the opposite end 55. The magnetic flux released to the outside of the member 50 can also be passed over the magnetic flux line guiding member 50 from the opposing end 55 of the other opposing magnetic flux line guiding member 50. For this reason, the magnetic flux line guiding member 50 can suppress the magnetic flux from passing through the racetrack coil and deteriorating the electrical characteristics of the racetrack coil.

  Although not shown, two magnetic flux line guiding members 60 disposed inside the rotor slot 12 may be disposed in the same manner as the magnetic flux line guiding member 50 of FIG. 6 described above. Alternatively, only one of the rotor 10 and the stator 20 may be provided with two magnetic flux line guiding members as shown in FIG. 6, and the other may be provided with only one magnetic flux line guiding member as shown in FIG. Good. Or according to a condition, it is not necessary to arrange | position a magnetic flux line induction member about said other.

  The second embodiment of the present invention is different from the first embodiment only in the above points. Therefore, the configuration, conditions, procedures, effects, and the like that have not been described above for the second embodiment are all in accordance with the first embodiment.

(Embodiment 3)
The motor 100 according to the third embodiment has basically the same mode as the motor 100 according to the second embodiment. However, the motor 100 according to the third embodiment is different from the motor 100 according to the second embodiment in the shape of the magnetic flux line guiding member 50. Specifically, as shown in FIG. 7, the magnetic flux line guide member 50 of the third embodiment extends from the region corresponding to the branch point 53 in the magnetic flux line guide member 50 of FIG. 6 toward the facing end portion 55. The area does not exist.

  Thus, even if there is no region extending from the branch point 53 of the magnetic flux line guiding member 50 in the second embodiment (FIG. 6) toward the opposing end 55, the member side of the magnetic flux line guiding member in FIG. The magnetic flux focused in the region extending left and right from the direction 51 passes along the direction in which the magnetic flux line guiding member 50 extends. For this reason, it usually turns at the branch point 53 in the direction in which the protruding region 52 extends. The ratio of the magnetic flux that goes straight at the branch point 53 and oozes out from the magnetic flux line guiding member 50 is not large. Even if it protrudes, the space | interval of the area | region pinched by both the magnetic flux line induction members 50 which oppose is narrow. For this reason, the magnetic flux which protrudes is easily induced | guided | derived to the other opposing magnetic flux line guide member 50, and can advance on the said magnetic flux line guide member 50. FIG. Therefore, the magnetic flux line guiding member 50 according to the third embodiment may be used instead of the magnetic flux line guiding member 50 according to the second embodiment. Further, a magnetic flux line guiding member 60 having the same configuration as that of the magnetic flux line guiding member 50 described above may be disposed inside the rotor slot 12. Further, only one of the rotor 10 and the stator 20 is provided with a magnetic flux line guiding member having the same aspect as the magnetic flux line guiding member 50 of FIG. 7 described above. Or the same thing as the magnetic flux line guide member of FIG. 6 may be arrange | positioned. Or according to a condition, it is not necessary to arrange | position a magnetic flux line induction member about said other.

  The third embodiment of the present invention is different from the second embodiment only in the above points. Therefore, the configuration, conditions, procedures, effects, and the like not described above for the third embodiment are all in accordance with the second embodiment.

(Embodiment 4)
The motor 100 according to the fourth embodiment has basically the same aspect as the motor 100 according to each of the above-described embodiments. However, the motor 100 according to the fourth embodiment is different from the motor 100 according to each embodiment described above in the shape of the magnetic flux line guiding member 50. Specifically, as shown in FIG. 8, the magnetic flux line guiding member 50 of the fourth embodiment extends the region from the branch point 53 to the opposite end portion 55 of the two magnetic flux line guiding members 50 of FIG. 6. And a single magnetic flux line guiding member 50 is provided. From a different point of view, the magnetic flux line guiding member 50 according to the fourth embodiment connects a region sandwiched between the branch points 53 of the two magnetic flux line guiding members 50 in FIG. 50 is provided.

  With this configuration, for example, even if the magnetic flux that has passed through the magnetic flux line guiding member 50 from one (left side) side 51 to the branch point 53 does not turn at the left branch point 53 and goes straight, It can reach the branch point 53 and turn there to proceed on the right protruding region 52. Alternatively, even if the magnetic flux line does not turn at the right branch point 53 and goes straight, it can be passed over the magnetic flux line guiding member 50 toward the right protruding region. For this reason, the magnetic flux line guiding member 50 can further reliably suppress the magnetic flux from passing through the racetrack coil and deteriorating the electrical characteristics of the racetrack coil. Further, a magnetic flux line guiding member 60 having the same configuration as that of the magnetic flux line guiding member 50 described above may be disposed inside the rotor slot 12. Further, only one of the rotor 10 and the stator 20 is provided with a magnetic flux line guiding member having the same aspect as the magnetic flux line guiding member 50 of FIG. 8 described above, and for the other, for example, FIG. The thing similar to the magnetic flux line guide member of FIG. 7 may be arranged. Or according to a condition, it is not necessary to arrange | position a magnetic flux line induction member about said other.

  The fourth embodiment of the present invention differs from the above-described embodiments only in the above points. Accordingly, the configuration, conditions, procedures, effects, and the like that have not been described above for Embodiment 4 are all in accordance with the above-described embodiments.

(Embodiment 5)
The motor 100 according to the fifth embodiment has basically the same mode as the motor 100 according to the first embodiment. However, the motor 100 according to the fifth embodiment is different from the motor 100 according to the first embodiment in the shape of the magnetic flux line guiding member 50.

  Specifically, as shown in FIG. 9, a projecting region 52 is formed at a branch point 53 of the magnetic flux line guiding member 50, but extends in the left-right direction of the projecting region 52 and the magnetic flux line guiding member 50. The corner portion 56 of the connecting portion (branch point 53) with the existing portion has an R surface shape. On the other hand, the magnetic flux line guide member 50 of the motor 100 according to the first embodiment described above has an angular shape in which the portion rises substantially vertically.

  As in the magnetic flux line guiding member 50 of the fifth embodiment, the corner portion 56 is formed into an R surface shape at the branching point, for example, on the magnetic flux line guiding member 50 from one member side 51 toward the branching point 53. The magnetic flux that has passed through can be more smoothly turned toward the protruding region 52 at the branch point 53. Therefore, for example, the magnetic flux does not turn at the branch point 53 as described above, but further passes through the outer peripheral surface of the facing racetrack coil so as to penetrate in the direction along the thickness direction of the racetrack coil. It can be reliably suppressed. For this reason, the magnetic flux line guiding member 50 can further reliably suppress the magnetic flux from passing through the racetrack coil and deteriorating the electrical characteristics of the racetrack coil. Further, a magnetic flux line guiding member 60 having the same configuration as that of the magnetic flux line guiding member 50 described above may be disposed inside the rotor slot 12. Further, only one of the rotor 10 and the stator 20 is provided with a magnetic flux line guiding member having the same aspect as the magnetic flux line guiding member 50 of FIG. 9 described above, and for the other, for example, FIG. -You may arrange | position the thing similar to the magnetic flux line induction member of FIG. Or according to a condition, it is not necessary to arrange | position a magnetic flux line induction member about said other.

  The fifth embodiment of the present invention is different from the first embodiment only in the above points. Therefore, the configuration, conditions, procedures, effects, and the like that have not been described above for the fifth embodiment are all in accordance with the first embodiment.

(Embodiment 6)
The motor 100 according to the sixth embodiment has basically the same mode as the motor 100 according to the second embodiment. However, the motor 100 according to the sixth embodiment is different from the motor 100 according to the second embodiment in the shape of the magnetic flux line guiding member 50. Specifically, as shown in FIG. 10, the thickness t _{1 of} the region along the direction from the inner peripheral surface to the outer peripheral surface of one stator coil 21 and a branch point that is a region where the protruding region 52 is formed. The thickness t ₂ of the region on the tip side (opposed end 55 side) from 53 is different. Specifically, towards the thickness t ₂ than the thickness t ₁ is thicker.

In this way, the volume of the magnetic flux line guiding member 50 can be relatively increased in the central region between the left and right stator coils 21, which is the region farthest from the stator coil 21. As a result, the magnetic flux extending from the stator coil 21 can be more reliably guided to the region away from the stator coil 21 (the region where the opposed end portion 55 is located) via the magnetic flux line guiding member 50. Further, the thickness (thickness) t ₃ of the protruding areas 52, for example, the same thickness as t _2, may be changed according to the strength to pass the magnetic flux. Further, a magnetic flux line guiding member 60 having the same configuration as that of the magnetic flux line guiding member 50 described above may be disposed inside the rotor slot 12. Further, only one of the rotor 10 and the stator 20 is provided with a magnetic flux line guiding member having the same aspect as the magnetic flux line guiding member 50 of FIG. 10 described above, and for the other, for example, FIG. -You may arrange | position the thing similar to the magnetic flux line induction member of FIG. Or according to a condition, it is not necessary to arrange | position a magnetic flux line induction member about said other.

  The sixth embodiment of the present invention is different from the second embodiment only in the above points. Therefore, the configuration, conditions, procedures, effects, and the like not described above for the sixth embodiment are all in accordance with the second embodiment.

(Embodiment 7)
The motor 100 according to the seventh embodiment has basically the same mode as the motor 100 according to the first embodiment. However, the motor 100 according to the seventh embodiment is different from the motor 100 according to the first embodiment in the shape of the magnetic flux line guiding member 50. Specifically, as shown in FIG. 11, the thickness t _{1 of} the region along the direction from the inner peripheral surface of one stator coil 21 toward the outer peripheral surface, and the other stator coil 21 facing one stator coil 21. different regions and thicknesses t ₂ of along a direction toward the outer circumference from the inner peripheral surface of.

When one end of the region extending in the left-right direction in FIG. 11 along the direction from the inner peripheral surface of the stator coil 21 to the outer peripheral surface is the member side 51, the other end is the member side 57. Assume. For example, when the magnetic field generated by the right stator coil 21 is stronger than the magnetic field generated by the left stator coil 21 in FIG. 11, the region extending in the left-right direction of the magnetic flux line guiding member 50 as shown in FIG. regard, the thickness of the region facing the right side of the stator coil 21 than the thickness t ₁ of the region opposed to the left side of the stator coil 21 (from member side 51 to the branch point 53) (the member side 57 to the branch point 53) it is preferable to increase the t _2. By doing so, the magnetic flux extending from the right stator coil 21 and stronger than the left stator coil 21 can be more reliably focused on the magnetic flux line guiding member 50. Further, the thickness (thickness) t ₃ of the protruding areas 52, for example, the same thickness as t _2, may be changed according to the strength to pass the magnetic flux. Further, a magnetic flux line guiding member 60 having the same configuration as that of the magnetic flux line guiding member 50 described above may be disposed inside the rotor slot 12. Further, only one of the rotor 10 and the stator 20 is provided with a magnetic flux line guiding member having the same aspect as the magnetic flux line guiding member 50 of FIG. 11 described above, and for the other, for example, FIG. -You may arrange | position the thing similar to the magnetic flux line induction member of FIG. Or according to a condition, it is not necessary to arrange | position a magnetic flux line induction member about said other.

  The seventh embodiment of the present invention is different from the first embodiment only in the above points. Therefore, the configuration, conditions, procedures, effects, and the like that have not been described above for the seventh embodiment are all in accordance with the first embodiment.

  Note that the magnetic flux line guiding member 50 in each of the embodiments described above is a region extending along the direction from the inner peripheral surface of the stator coil 21 to the outer peripheral surface (the member side 51 and the branch point 53 are arranged). Is included inside the stator coil 21 (inner circumferential side in the radial direction from the rotation axis of the motor 100 to the outside). However, even when the magnetic flux line guiding member 50 having a configuration in which the region extending in the left-right direction is also arranged outside the stator coil 21 (outer peripheral side in the radial direction from the rotation axis of the motor 100 to the outside) is used. Good. Similarly, the magnetic flux line guiding member 60 (see FIG. 4) disposed inside the rotor slot 12 extends along the direction from the inner peripheral surface to the outer peripheral surface of the rotor coil 11 (the member side 51 and the branch). (Including the point 53) may be arranged not only outside but also inside the rotor coil 11.

  As described above, the embodiments of the present invention have been described. However, it should be considered that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  The present invention is particularly excellent as a technique for improving the electrical characteristics of a superconducting device and a superconducting coil body used in the superconducting device.

  1a, 1b High magnetic field region, 10 rotor, 11 rotor coil, 12 rotor slot, 13 rotor core, 14 rotor core side portion, 16 rotor shaft, 17 coil cooling vessel, 18 output shaft, 20 stator, 21 stator coil, 22 status lot , 23 Stator core, 24 Stator core side part, 30 Motor body part, 35 Bearing, 50, 60 Magnetic flux line guide member, 51, 57, 61 Member side part, 52, 62 Protruding region, 53, 63 Branch point, 54 Center Part, 55 opposite end part, 56 corner part, 59,69 magnetic flux, 100 motor.

Claims (13)

A racetrack coil,
A superconducting coil body comprising a core disposed on the inner peripheral surface side of the racetrack coil;
A superconducting coil body comprising a magnetic flux line induction member facing the linear portion of the racetrack coil and the side of the core and having a length equal to or longer than the length of the linear portion of the core.   The superconducting coil body according to claim 1, wherein the magnetic flux line guiding member includes a protruding region extending in a direction along a direction in which the core is inserted on an outer peripheral surface side of the racetrack coil.   The magnetic flux line guiding member extends from a central portion between the inner peripheral surface and the outer peripheral surface of the race track type coil to an outer peripheral surface of the race track type coil in a direction from the inner peripheral surface to the outer peripheral surface of the race track type coil. The superconducting coil body according to claim 1, wherein the superconducting coil body extends so as to face the region.   The superconducting coil body according to any one of claims 1 to 3, wherein the magnetic flux line guiding member is made of a steel plate.   A superconducting device using the superconducting coil body according to any one of claims 1 to 4. A racetrack coil,
A rotor using a superconducting coil body including a core disposed on an inner peripheral surface side of the racetrack coil;
The superconducting coil body includes a magnetic flux line guiding member that is opposed to a side of the straight portion of the racetrack coil and the side of the core and has a length equal to or longer than the length of the straight portion of the core.   7. The rotor according to claim 6, wherein the magnetic flux line guiding member includes a protruding region extending in a direction along a direction in which the core is inserted on an outer peripheral surface side of the racetrack coil.   The magnetic flux line guiding member extends from a central portion between the inner peripheral surface and the outer peripheral surface of the race track type coil to an outer peripheral surface of the race track type coil in a direction from the inner peripheral surface to the outer peripheral surface of the race track type coil. The rotor according to claim 6, wherein the rotor extends so as to face the region.   The rotor according to any one of claims 6 to 8, wherein the magnetic flux line guiding member is made of a steel plate. A racetrack coil,
A stator using a superconducting coil body comprising a core disposed on the inner peripheral surface side of the racetrack-type coil,
A stator comprising a superconducting coil body provided with a magnetic flux line induction member facing the linear portion of the racetrack coil and the side of the core and having a length equal to or longer than the length of the linear portion of the core.   11. The stator according to claim 10, wherein the magnetic flux line guide member includes a protruding region extending in a direction along a direction in which the core is inserted on an outer peripheral surface side of the racetrack coil.   The magnetic flux line guiding member extends from a central portion between the inner peripheral surface and the outer peripheral surface of the race track type coil to an outer peripheral surface of the race track type coil in a direction from the inner peripheral surface to the outer peripheral surface of the race track type coil. The stator according to claim 10, wherein the stator extends so as to face the region.   The stator according to claim 10, wherein the magnetic flux line guiding member is made of a steel plate.

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